Variability in the structure of epiphytic microalgae assemblages on the leaves of Posidonia oceanica in relation to human disturbance in a meadow off Tunisia
DOI:
https://doi.org/10.3989/scimar.03939.06AKeywords:
epiphytic microalgae, sewage disturbance, spatial variability, Posidonia oceanicaAbstract
We investigated the impact of sewage discharge on Posidonia oceanica meadows in Mahdia, eastern Tunisia. We specifically addressed changes in biometric plant parameters and epiphytic microalgae composition on leaves caused by this anthropogenic interference. A hierarchical sampling design was used to compare epiphytic microalgae structure between one disturbed and two control stations. Samples were collected by SCUBA diving at 8 m depth in August 2009. A total of 58 microalgae taxa were identified on leaves. At the disturbed station, leaf length, leaf surface area and the leaf area index decreased, whereas epiphytic dinoflagellate abundances increased compared with the control stations, with more Prorocentrales, Protoperidiniales and potentially toxic species on leaves of the disturbed station. Moderate nutrient enrichment (mainly Si(OH)4 and NH4+) and low water transparency at the disturbed station were associated with the increased abundances of some dinoflagellate species.
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Aligizaki K., Nikolaidis G. 2006. The presence of the potentially toxic genera Ostreopsis and Coolia (Dinophyceae) in the North Aegean Sea, Greece. Harmful Algae 5: 717-730. http://dx.doi.org/10.1016/j.hal.2006.02.005
Anderson D.M., Glibert P.M., Burkholder J.M. 2002. Harmful Algal Blooms and Eutrophication: Nutrient Sources, Composition, and Consequences. Estuaries 25: 704-726. http://dx.doi.org/10.1007/BF02804901
Armi Z., Turki S., Trabelsi E., BenMaiz N. 2010. First recorded proliferation of Coolia monotis (Meunier, 1919) in the North Lake of Tunis (Tunisia) correlation with environmental factors. Environ. Monit. Assess. 164: 423-433. http://dx.doi.org/10.1007/s10661-009-0903-z PMid:19404758
Armitage A.R., Frankovich T.A., Fourqurean J.W. 2006. Variable responses within epiphytic and benthic microalgal communities to nutrient enrichment. Hydrobiologia 569: 423-435. http://dx.doi.org/10.1007/s10750-006-0146-8
Augier H., Maudinas B. 1979. Influence of the pollution on the photosynthetic pigments of the marine phanerogam Posidonia oceanica collected from different polluted areas of the Region of Marseille (Mediterranean sea, France). Oecolog. Plantar. 14(2): 169-176.
Baker J.W., Groyer J.P., Brooks B.W., Ure-a-Boeck F., Roelke D.L., Errera R.M., Kiesling R. 2007. Growth and toxicity of Prymnesium parvum (Haptophyta) as a function of salinity, light and temperature. J. Phycol. 43: 219-222. http://dx.doi.org/10.1111/j.1529-8817.2007.00323.x
Balata D., Bertocci I., Piazzi L., Nesti N. 2008 Comparison between epiphyte assemblages of leaves and rhizomes of the seagrass Posidonia oceanica subjected to different levels of anthropogenic eutrophication. Estuar. Coast Shelf. Sci. 79: 533-540. http://dx.doi.org/10.1016/j.ecss.2008.05.009
Ben Alaya H. 1972. Répartition et conditions d'installation de Posidonia oceanica Delile et Cymodocea nodosa Ascherson dans le golfe de Tunis. Bull. Inst. Nat. Sc. et Tech. d'Océanographie et de Pèche de Salammbo 2: 331-416.
Ben Brahim M., Hamza A., Hannachi I., Rebai A., Jarboui O., Bouain A., Aleya L. (2010). Variability in the structure of epiphytic assemblages of Posidonia oceanica in relation to human interferences in the Gulf of Gabes, Tunisia. Mar. Environ. Res. 70: 411-421. http://dx.doi.org/10.1016/j.marenvres.2010.08.005 PMid:20851462
Ben Brahim M, Hamza A., Ben Ismail S., Mabrouk L., Bouain A., Aleya L. 2013. What factors drive seasonal variation of phytoplankton, protozoans and metazoans on leaves of Posidonia oceanica and in the water column along the coast of the Kerkennah Islands, Tunisia? Mar. Pollut. Bull. 71: 286-298. http://dx.doi.org/10.1016/j.marpolbul.2013.01.024 PMid:23498657
Borowitzka M.A., Lavery P., Keulen M. (2006). Epiphytes of Seagrasses. In: Larkum A.W.D., Orth R.J., Duarte C.M. (eds), Seagrasses: Biology, Ecology and Conservation. Springer, The Netherlands: 441-461.
Cambridge M.L., Chiffings A.W., Brittan C., Moore L., McComb A.J. 1986. The loss of seagrass in Cockburn Sound, Western Australia. Possible causes of seagrass decline. Aquat. Bot. 24: 269-285. http://dx.doi.org/10.1016/0304-3770(86)90062-8
Cancemi G., De Falco G., Pergent G. 2003. Effects of organic matter input from a fish farming facility on Posidonia oceanica meadow. Estuar. Coast. Shelf Sci. 56: 961-968. http://dx.doi.org/10.1016/S0272-7714(02)00295-0
Capiomont A., Piazzi L., Pergent G. 2000. Seasonal variations of total mercury in foliar tissues of Posidonia oceanica. J. Mar. Biol. Assoc. U. K. 80: 1119-1123. http://dx.doi.org/10.1017/S0025315400003192
Cattaneo A. 1983. Grazing on epiphytes. Limnol. Oceanogr. 28: 124-132. http://dx.doi.org/10.4319/lo.1983.28.1.0124
Chikhaoui M.A., Hlaili A.S., Mabrouk H.H. 2008. Seasonal phytoplankton responses to N:Si:P enrichment ratio in the Bizerte Lagoon (southwestern Mediterranean). C. R. Biol.¡ 331(5): 389-408. http://dx.doi.org/10.1016/j.crvi.2008.03.005 PMid:18472085
Chung M.H., Lee K.S. 2008. Species composition of the epiphytic diatoms on the leaf tissues of three Zostera species distributed on the southern coast of Korea. Algae 23: 75-81. http://dx.doi.org/10.4490/ALGAE.2008.23.1.075
Clarke K.R. 1993. Nonparametric multivariate analyses of changes in community structure. Aust. J. Ecol. 18: 117-143. http://dx.doi.org/10.1111/j.1442-9993.1993.tb00438.x
Clarke K.R., Warwick R.M. 2001. Change in marine communities: an approach to statistical analysis and interpretation. PRIMER-E Ltd. Plymouth, UK, 172 pp.
Cummins S.P., Roberts D.E., Ajani P., Underwood A.J. 2004. Comparisons of assemblages of phytoplankton between open water and seagrass habitats in a shallow coastal lagoon. Mar. Freshwater. Res. 55: 447-456. http://dx.doi.org/10.1071/MF04017
Faust M.A. 1991. Morphology of ciguatera-causing Prorocentrum lima (Pyrrhophyta) from widely differing sites. J. Phycol. 27: 642-648. http://dx.doi.org/10.1111/j.0022-3646.1991.00642.x
Frankovich T.A., Zieman J.C. 1994. Total epiphyte and epiphytic carbonate production on Thalassia testudinum across Florida Bay. Bull. Mar. Sci. 54: 679-695.
Frankovich T.A., Armitage A.R., Wachnicka A., Gaiser E.E., Fourqurean J.W. 2009. Nutrient effects on seagrass epiphyte community structure in Florida Bay. J. Phycol. 45: 1010-1020. http://dx.doi.org/10.1111/j.1529-8817.2009.00745.x
Gambi M.C., Lorenti M., Russo G.F., Scipione M.B., Zupo V. 1992. Depth and seasonal distribution of some groups of the vagile fauna of the Posidonia oceanica leaf stratum- structural and trophic analyses. Mar. Ecol. 13: 17-39. http://dx.doi.org/10.1111/j.1439-0485.1992.tb00337.x
Giraud G. 1979. Sur une méthode de mesure et de comptage des structures foliaires de Posidonia oceanica (Linnaeus) Delile. Bull. Mus. Hist. nat. Marseille 39: 33-39.
Grasshoff K., Ehrhardt M., Kremling K. 1983. Methods of Seawater Analysis. Verlag Chemie GmbH, Weinheim, Germany, 419 pp.
Green E.P., Short F.T. 2003. World Atlas of Seagrasses. University of California Press, Berkeley, USA, 286 pp.
Harrison P.J., Clifored P.J., Cochlan W.P., Yin K., St. John M.A., Thompson P.A., Sibbald M.J., Albright L.J. 1991. Nutriment and plankton dynamics in the Frazer River Plume, Strait of Georgia, British Columbia. Mar. Ecol. Prog. Ser. 70: 291-304. http://dx.doi.org/10.3354/meps070291
Hauxwell J., Cebrian J., Valiela I. 2003. Eelgrass Zostera marina loss in temperate estuaries: Relationship to land-derived nitrogen loads and effect of light limitation imposed by algae. Mar. Ecol. Prog. Ser. 247: 59-73. http://dx.doi.org/10.3354/meps247059
Heck Jr. K.L., Valentine J.F. 2007. The primacy of top-down effects in shallow benthic ecosystems. Estuar. Coast 30: 371-381. http://dx.doi.org/10.1007/BF02819384
Hodgkiss I.J. 2001. The N:P ratio revisited. In: Ho, K.C., Wang, Z.D. (eds), Prevention and Management of Harmful Algal Blooms in the South China Sea. School of Science and Technology, the Open University of Hong Kong: 344-355.
Ierodiaconou D.A., Laurenson L.J.B. 2002. Estimates of Heterozostera tasmanica, Zostera muelleri and Ruppia megacarpa distribution and biomass in the Hopkins Estuary, Western Victoria, by GIS. Aust. J. Bot. 50: 215-228. http://dx.doi.org/10.1071/BT00093
Jernakoff P., Nielsen J. 1997. The relative importance of amphipod and gastropod grazers in Posidonia sinuosa meadows. Aquat. Bot. 56: 183-202. http://dx.doi.org/10.1016/S0304-3770(96)01112-6
Jernakoff P., Brearley B., Nielsen J. 1996. Factors affecting grazer-epiphyte interactions in temperate seagrass meadows. Oceanogr. Mar. Biol. Ann. Rev. 34: 109-162.
Johnson M.P., Edwards M., Bunker F., Magg C.A. 2005. Algal epiphytes of Zostera marina: Variation in assemblage structure from individual leaves to regional scale. Aquat. Bot. 82: 12-26. http://dx.doi.org/10.1016/j.aquabot.2005.02.003
Kendrick G.A., Lavery P.S. 2001. Assessing biomass, assemblage structure and productivity of algal epiphytes on seagrasses. In: Short F.T., Coles R.G. (eds), Glogal Seagrass Research Methods. Elsevier, Amesterdam. pp. 199-222.
Lepoint G., Jacquemart J., Bouquegneau J.M., Demoulin V., Gobert S. 2007. Field measurements of inorganic nitrogen uptake by epiflora components of the seagrass Posidonia oceanica (Monocotyledons, Posidoniaceae). J. Phycol. 43: 208-218. http://dx.doi.org/10.1111/j.1529-8817.2007.00322.x
Leriche A., Boudouresque C.F., Bernard G., Bonhomme P., Denis J., 2004. A one-century suite of seagrass bed maps: can we trust ancient maps? Estuar. Coast. Shelf Sci. 59: 353-362. http://dx.doi.org/10.1016/j.ecss.2003.09.007
Lin H.J., Nixon S.W., Taylor D.I., Granger S.L., Buckley B.A. 1996. Responses of epiphytes on eelgrass, Zostera marina L., to separate and combined nitrogen and phosphorus enrichment. Aquat. Bot. 52: 243-258. http://dx.doi.org/10.1016/0304-3770(95)00503-X
Mabrouk L., Hamza A., Sahraoui H., Bradai M.N. 2009. Caractéristique et phénologie de l'herbier de Posidonia oceanica (L.) Delile sur les côtes de Mahdia (région est de la Tunisie). Bull. Inst. Nat. Sc. et Tech. d'Océanographie et de Pèche de Salammbo 36: 139-148.
Mabrouk L., Hamza A., Ben Brahim M., Bradai M.N. 2011. Seasonal and bathymetric variations of epiphytic microorganisms on Posidonia oceanica (L.) Delile leaves in Mahdia (Tunisia). Mar. Ecol. 32: 148-161. http://dx.doi.org/10.1111/j.1439-0485.2011.00432.x
Mabrouk L., Hamza A., Mahfoudi M., Bradai M.N. 2012. Spatial and temporal variations of epiphytic Ostreopsis siamensis on Posidonia oceanica (L.) Delile leaves in Mahdia (Tunisia). Cah. Biol. Mar. 53: 419-427.
Mabrouk L., Hamza A., Ben Brahim M., Bradai M.N. 2013. Variability in the structure of epiphyte assemblages on leaves and rhizomes of Posidonia oceanica in relation to human disturbances in a seagrass meadow off Tunisia. Aquat. Bot. 108: 33-40. http://dx.doi.org/10.1016/j.aquabot.2013.03.002
Mangialajo L., Bertolotto R., Cattaneo Vietti R., Chiantore M., Grillo C., Lemee R., Melchiorre C., Moretto P., Povero P., Ruggieri N. 2008. The toxic benthic dinoflagellate Ostreopsis ovata: Quantification of proliferation along the coastline of Genoa, Italy. Mar. Pollut. Bull. 56: 1209-1214. http://dx.doi.org/10.1016/j.marpolbul.2008.02.028 PMid:18381216
Marbà N., Santiago R., Dıaz-Almela E., Alvarez E., Duarte C.M. 2006. Seagrass (Posidonia oceanica) vertical growth as an early indicator of fish farm-derived stress. Estuar. Coast Shelf. Sci. 67: 475-483. http://dx.doi.org/10.1016/j.ecss.2005.11.034
Marr J.C., Jackson A.E., McLachlan J.L. 1992. Occurrence of Prorocentrum lima, a DSP toxin-producing species from the Atlantic coast of Canada. J. Appl. Phycol., 4: 17-24. http://dx.doi.org/10.1007/BF00003956
Mazzella L., Russo G.F., 1989. Grazing effect of two Gibbula species (Mollusca, Archaeogastropoda) on the epiphytic community of Posidonia oceanica leaves. Aquat. Bot. 35: 357-373. http://dx.doi.org/10.1016/0304-3770(89)90007-7
Mazzella L., Scipione M.B., Buia M.C. 1989. Spatio-temporal distribution of algal and animal communities in a Posidonia oceanica (L.) Delile meadow. Mar. Ecol. 10: 107-131. http://dx.doi.org/10.1111/j.1439-0485.1989.tb00069.x
Montefalcone M. 2009. Ecosystem health assessment using the Mediterranean seagrass Posidonia oceanica: a review. Ecol. Indic. 9: 595-604. http://dx.doi.org/10.1016/j.ecolind.2008.09.013
Montefalcone M., Chiantore M., Lanzone A., Morri C., Bianchi C.N., Albertelli G. 2008. BACI design reveals the decline of the seagrass Posidonia oceanica induced by anchoring. Mar. Pollut. Bull. 56: 1637-1645. http://dx.doi.org/10.1016/j.marpolbul.2008.05.013 PMid:18603267
Moore K.A., Wetzel R.L. 2000. Seasonal variations in eelgrass (Zostera marina L.) responses to nutrient enrichment and reduced light availability in experimental ecosystems. J. Exp. Mar. Biol. Ecol. 244: 1-28. http://dx.doi.org/10.1016/S0022-0981(99)00135-5
Morton S.L., Norris D.R., Bomber J.W. 1992. Effect of temperature, salinity and light intensity on the growth and seasonality of toxic dinoflagellates associated with ciguatera. J. Exp. Mar. Biol. Ecol. 157: 79-90. http://dx.doi.org/10.1016/0022-0981(92)90076-M
Nakajima I., Oshima Y., Yasumoto T. 1981. Toxicity of benthic dinoflagellates in Okinawa. B. JPN. Soc. Sci. Fish. 47: 1029-1033. http://dx.doi.org/10.2331/suisan.47.1029
Nascimento S.M., Purdie D.A., Morris S. 2005. Morphology, toxin composition and pigment content of Prorocentrum lima strains isolated from a coastal lagoon in southern UK. Toxicon 45: 633-649. http://dx.doi.org/10.1016/j.toxicon.2004.12.023 PMid:15777960
Neckles H. A. 1993. The role of epiphytes in seagrass production and survival: Microcosm studies and simulation modelling. In: Morris L.J., Tomasko D.A. (eds), Proceedings and Conclusions of Workshops on: Submerged Aquatic Vegetation and Photosynthetically Active Radiation. Special Publication St Johns River Water Management District, Palatka, Florida, pp. 91-105.
Neckles H.A., Koepfler E.T., Haas L.W., Wetzel R.L., Orth R.J., 1994. Dynamics of epiphytic photoautotrophs and heterotrophs in Zostera marina (eelgrass) microcosms: responses to nutrient enrichment and grazing. Estuaries 17: 597-605. http://dx.doi.org/10.2307/1352407
Nesti U., Piazzi L., Balata D. 2009. Variability in the structure of epiphytic assemblages of the Mediterranean seagrass Posidonia oceanica in relation to depth. Mar. Ecol. 30 : 276-287. http://dx.doi.org/10.1111/j.1439-0485.2008.00275.x
ONAS. 2008. Etude de pré-investissement sur la dépollution du golfe de Tunis–Titre II: Caractérisation du golfe de Tunis Synthèse. Synthèse générale sur l'état du golfe de Tunis. 12 pp. http://www.environnement.gov.tn/fileadmin/medias/pdfs/prev_risq/prev_risq_synthese_generale.pdf
Orth R.J., Carruthers T.J.B., Dennison W.C., Duarte C.M., Fourqurean J.W., Heck Jr K.L., Hughes A.R., Kendrick G.A., Kenworthy W.J., Olyarnik S., Short F.T., Waycott M., Williams S.L. 2006. A global crisis for seagrass ecosystems. Bioscience 56: 987-996. http://dx.doi.org/10.1641/0006-3568(2006)56[987:AGCFSE]2.0.CO;2
Pergent G., Pergent-Martini C., Boudouresque C.F. 1995. Utilisation de l'herbier à Posidonia oceanica comme indicateur biologique de la qualité du milieu littoral en Méditerranée: état des connaissances. Mésogée 54: 3-29.
Pergent-Martini C., 1994. Impact d'un rejet d'eaux usées urbaines sur l'herbier à Posidonia oceanica, avant et après la mise en service d'une station d'épuration. PhD thesis, University of Corsica, Corte, France, 191 pp.
Pergent-Martini C., Pergent G., 2000. Marine phanerogams as a tool in the evaluation of marine trace-metal contamination: an example from the Mediterranean. Int. J. Environ. Pollut. 13: 1-6. http://dx.doi.org/10.1504/IJEP.2000.002313
Philippart C.J.M., Cadee G.C., Raaphorst W.V., Riegman R. 2000. Long-term phytoplankton-nutrient interactions in a shallow coastal sea: algal community structure, nutrient budgets, and denitrification potential. Limnol. Oceanogr. 45: 131-144. http://dx.doi.org/10.4319/lo.2000.45.1.0131
Piazzi L., Balata D., Cinelli F., Benedetti-Cecchi L. 2004. Patterns of spatial variability in epiphytes of Posidonia oceanica. Differences between a disturbed and two reference locations. Aquat. Bot. 79: 345-356. http://dx.doi.org/10.1016/j.aquabot.2004.05.006
Prézelin B.B., Haxo F.T. 1976. Purification and characterization of peridinin- chlorophyll a-proteins from the marine dinoflagel lates Gleodinium sp. and Gonyaulax polyedra. Planta (Berl). 128: 133-141. http://dx.doi.org/10.1007/BF00390314 PMid:24430688
Romdhane M.S., Eilertsen H.C., Yahia O.K.D., Yahia M.N.D., 1998. Toxic dinoflagellate blooms in Tunisian lagoons: causes and consequences for aquaculture. In: Reguera B., Blanco J., Fernandez M.L., Wyatt T. (eds), Harmful Algae. Xunta de Galicia and Intergovernmental Oceanographic Commission of UNESCO, Vigo, pp. 80-83.
Ruiz J.M., Pérez M., Romero J., Tomas F. 2009. The importance of herbivory in the decline of a seagrass (Posidonia oceanica) meadow near a fish farm: an experimental approach. Bot. Mar. 52: 449-458. http://dx.doi.org/10.1515/BOT.2009.053
Sarnelle O., Kratz K.W., Cooper S.D. 1993. Effects of an invertebrate grazer on the spatial arrangement of a benthic microhabitat. Oecologia 96: 208-218. http://dx.doi.org/10.1007/BF00317734
Shen Z.L. 2001. Historical changes in nutrient structure and its influences on phytoplantkon composition in Jiaozhou Bay. Estuar. Coast. Shelf Sci. 52: 211-224. http://dx.doi.org/10.1006/ecss.2000.0736
Sirota L., Hovel K.A. 2006. Eelgrass (Zostera marina) structural complexity: relative effects of shoot length, shoot density, and surface area on epifaunal community composition in San Diego Bay, California, USA. Mar. Ecol. Prog. Ser. 326: 115-131. http://dx.doi.org/10.3354/meps326115
Smayda T.J., Borkman D.G., Beaugrand G., Belgrano A.G. 2004. Ecological effects of climate variation in the North Atlantic: phytoplankton. In: Stenseth N.C., Ottersen G., Hurrell J., Belgrano A. (eds), Ecological Effects of Climate Variations in the North Atlantic. Oxford Univ. Press, pp. 49-54.
Somerfield P.J., Clarke K.R., Olsgard F. 2002. A comparison of the power of categorical and correlational tests applied to community ecology data from gradient studies. J. Anim. Ecol. 71: 581-593. http://dx.doi.org/10.1046/j.1365-2656.2002.00624.x
Sournia, A. (ed.). 1978. Phytoplankton manual. Monogr. oceanogr. Methodol. Unesco 6: xvi-337 pp.
Tall L., Cattaneo A., Cloutier L., Dray S., Legendre P. 2006. Resource partitioning in a grazer guild feeding on a multilayer diatom mat. J. N. Am. Benthol. Soc. 25: 800-810. http://dx.doi.org/10.1899/0887-3593(2006)025[0800:RPIAGG]2.0.CO;2
ter Braak C.J.F., Verdonschot P.F.M. 1995. Canonical correspondence analysis and related multivariate methods in aquatic ecology. Aquat. Sci. 57: 255-289. http://dx.doi.org/10.1007/BF00877430
Totti C., Accoroni S., Cerino F., Cucchiari E., Romagnoli T. 2010. Ostreopsis ovata bloom along the Conero Riviera (northern Adriatic Sea): Relationships with environmental conditions and substrata. Harmful Algae 9: 233-239. http://dx.doi.org/10.1016/j.hal.2009.10.006
Turki S. 2005. Distribution of toxic dinoflagellates along the leaves of seagrass Posidonia oceanica and Cymodocea nodosa from the Gulf of Tunis. Cah. Biol. Mar. 46: 29-34.
Underwood A.J. 1992. Beyond BACI: the detection of environmental impacts on populations in the real, but variable, world. J. Exp. Mar. Biol. Ecol. 161: 145-178. http://dx.doi.org/10.1016/0022-0981(92)90094-Q
UNEP/WHO 1996. Guidelines for submarine outfall structures for Mediterranean small and medium-sized coastal communities. MAP Technical Reports Series, 112. UNEP, Athens.
Utermöhl H. 1958. Zur vervollkommung der quantitativen Phytomicroorganisms-Methodik. Mitteilungen. Verhandlungen der Internationalen Vereinigung für Theoretische und Angewandte Limnologie 9: 1-38.
Wear D.J., Sullivan M.J., Moore A.D., Millie D.F. 1999. Effects of water-column enrichment on the production dynamics of three seagrass species and their epiphytic algae. Mar. Ecol. Prog. Ser. 179: 201-213. http://dx.doi.org/10.3354/meps179201
Zar J.H. 1999. Biostatistical analysis (Fourth ed.). Upper Saddle River, N.J. Prentice Hall, New Jersey, 663 pp.
Zieman J.C. 1989. Distribution, abundance and productivity of seagrasses and macroalgae in Florida Bay. Bull. Mar. Sci. 44: 292-311.
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